Englishfor English speakers
momentary
Adjective
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When something is momentary, it lasts for a very brief amount of time.
I took a momentary glimpse at the commotion.
overvoltage
noun
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(physics) The difference between the electric potential of an electrode or cell under the passage of a current and the thermodynamic value of the electrode or cell potential in the absence of electrolysis; overpotential.
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difference in potential